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CN108428936A - A kind of doping O2-Lithium ion solid electrolyte material of ion and preparation method thereof - Google Patents

A kind of doping O2-Lithium ion solid electrolyte material of ion and preparation method thereof Download PDF

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Publication number
CN108428936A
CN108428936A CN201810206258.5A CN201810206258A CN108428936A CN 108428936 A CN108428936 A CN 108428936A CN 201810206258 A CN201810206258 A CN 201810206258A CN 108428936 A CN108428936 A CN 108428936A
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solid electrolyte
ion
electrolyte material
preparation
lithium ion
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朱黎霞
赵志阳
王效聪
袁康
张洪
王红飞
苏洲
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Xidian University
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/056—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes
    • H01M10/0561—Accumulators with non-aqueous electrolyte characterised by the materials used as electrolytes, e.g. mixed inorganic/organic electrolytes the electrolyte being constituted of inorganic materials only
    • H01M10/0562—Solid materials
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M10/00—Secondary cells; Manufacture thereof
    • H01M10/05—Accumulators with non-aqueous electrolyte
    • H01M10/058—Construction or manufacture
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00—Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/50—Manufacturing or production processes characterised by the final manufactured product

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Abstract

The invention discloses a kind of doping O2‑Lithium ion solid electrolyte material of ion and preparation method thereof.The chemical formula of the solid electrolyte material is Li10GeP2S12‑xOx, x=0.3~2.0；The oxygen containing sulfide solid electrolyte material being prepared using the method that solid phase method and high temperature sintering are combined, higher ionic conductivity is shown at ambient temperature, and chemical stability is preferable, it does not react with the water in air, can be used as a kind of novel solid electrolyte material and be applied to all-solid lithium-ion battery.

Description

A kind of doping O2-Lithium ion solid electrolyte material of ion and preparation method thereof
Technical field
The invention belongs to all-solid lithium-ion battery field more particularly to a kind of O2-The lithium ion solid electrolyte material of doping Material and preparation method thereof.
Background technology
Lithium-ion battery systems mostly use liquid electrolyte at present, and liquid electrolyte is easily revealed, is perishable, cycle life It is short, there is security risk (such as 7 battery of mobile phone explosive incidents of Samsung Note, Boeing 737 airplane airplane crash etc.).Lithium ion battery Cycle life and capacity increased substantially on the basis of existing in advance under, safety issue is thoroughly solved to be that this field is sent out Open up the break-through point of most critical；Energy storage has pushed full the active demand of high security rechargeable battery with power vehicle field significantly The research and development of solid state lithium battery.
All-solid lithium-ion battery is the important research object of the following lithium battery development, and the solid electrolyte used is opposite There is excellent thermal stability and higher security performance in electrolyte, so the use of solid electrolyte being to solve lithium-ion electric The most effective approach of pond safety problem, core material one of of the solid electrolyte as lithium ion battery have wide research Foreground.
Current inorganic solid electrolyte is broadly divided into oxide-based and sulfide-based solid electrolyte, in room temperature condition Under ionic conductivity general relatively low (10‐6S/cm), interface impedance is larger, and mechanical performance is poor.Wherein, Li10GeP2S12 (LGPS) solid electrolyte as the conductivity highest found so far, most have one of the electrolyte of application prospect, but its is right Unstability in the unstability of oxide anode material, expensive raw material and structure will obviously hinder its practical application.
Due to the presence of these above-mentioned problems, cause all-solid lithium-ion battery commercial applications limited.Therefore, it develops A kind of safety is preferable, chemical property is stable and the solid electrolyte application of electrochemical performance is in lithium ion battery industry It is set to obtain commercial applications, it will to have a very important significance and be worth.
Invention content
The object of the present invention is to provide a kind of new lithium ion solid electrolyte materials, improve its ionic conductivity, solve The unsafe problems of commercial cells at present, and overcome the existing bad, expensive starting materials of solid electrolyte electrochemical stability etc. and lack It falls into.
Technical scheme is as follows：
A kind of doping O2-The lithium ion solid electrolyte material of ion, the material are crystalline structure, and chemical formula is Li10GeP2S12-xOX, wherein x value ranges are 0.3~2.0.
Wherein x specifically can use 0.3,0.4,0.8,1.2,1.6,2.0 etc..Best material is Li10GeP2S11.6O0.4。
Correspondingly, it is expected that a kind of new all-solid lithium-ion battery, electrolyte are that above-mentioned lithium ion is solid Body electrolyte Li10GeP2S12-xOX。
The invention also discloses above-mentioned doping O2-The preparation method of the lithium ion solid electrolyte material of ion, including it is following Step：
(1) according to molar ratio Li2S：P2S5：GeS2：Li2O=(5-x)：1：1：X weighs raw material and is ground；
(2) ground powder is mixed, carries out high temperature sintering, then natural cooling；
(3) doping O is finally obtained2-The lithium ion solid electrolyte material Li of ion10GeP2S12-xOx。
Wherein, after the completion of step (2), sample is taken to carry out XRD detection and analysis, if testing result shows that sample contains dephasign, Double sintering natural cooling again can be carried out, to reach product qualification.
Further, step (1) weighs and grinds the ambient oxygen content of raw material and water content is respectively less than 1ppm；Grinding gained The grain size of powder is 300-500 mesh.
Further, step (2) is specifically and ground powder is fitted into crucible, and sealing is transferred to vacuum atmosphere tube type Resistance furnace is passed through argon gas as protective gas, and 550 DEG C of calcination temperature is kept the temperature for 24 hours, then cooled to room temperature.
Further, the calcination temperature of the double sintering is 560 DEG C, and heat preservation is for 24 hours.
The invention has the advantages that：
1, ionic conductivity has significant raising, can reach 2 × 10‐5S/cm or more, can be with existing commercialization Polymer dielectric compare favourably.
2, commercialized lithium battery mostly uses greatly oxide as positive electrode at present, and the present invention is using lithia as mixing Miscellaneous material not only can effectively reduce the interface impedance between electrolyte and electrode, can also improve ion to a certain extent Efficiency of transmission, promote the cycle life and high rate performance of solid state battery.
3, lithia is as a kind of cheap preparation Li10GeP2S12Solid electrolyte material is (compared to lithium sulfide price 130/g, 99.9% (metals basis)；Lithia price 50/g, 99.5% (metals basis)), to a certain extent The cost for preparing electrolyte is reduced, to reduce the production cost of battery so that all-solid-state battery commercialization more into One step.
4, sulfide-based electrolyte is introduced oxygen into can both to can be combined with aoxidizing in conjunction with the high ion conductivity of sulfide The electrochemical stability of object.
5, lithia can form solid solution Li as dopant material10GeP2S12-xOX, wherein x=0.3,0.4,0.8, 1.2,1.6,2.0.To Li10GeP2S12There is certain stability action in structure, ensures Li10GeP2S12-xOXApplied to complete Electrolyte does not occur and caves in phenomenon for solid lithium ion battery.
Description of the drawings
Fig. 1 is powder SEM figure of the lithium ion solid electrolyte material of the preparation of the embodiment of the present invention 2 under the conditions of 10KV. (× 10000,5 microns).
Fig. 2 is powder SEM figure of the lithium ion solid electrolyte material of the preparation of the embodiment of the present invention 2 under the conditions of 10KV. (× 20000,2 microns).
Fig. 3 is electrolyte sheet SEM of the lithium ion solid electrolyte material of the preparation of the embodiment of the present invention 2 under the conditions of 10KV Figure.(× 50000,1 micron).
Fig. 4 is the XRD diagram of lithium ion solid electrolyte material prepared by the embodiment of the present invention 2.
Fig. 5 is the EDS energy spectrum diagrams of lithium ion solid electrolyte material prepared by the embodiment of the present invention 2.
Fig. 6 is the electrochemical impedance spectroscopy of the lithium ion solid electrolyte material of the preparation of the embodiment of the present invention 2 under room temperature Figure.
Specific implementation mode
The present invention uses the method that solid phase method and high temperature sintering are combined, and prepares the oxygen containing sulfide solid electrolyte material Material, specifically includes following steps：
Step 1：In glove box, take raw material with molar ratio (5-x) Li2S：P2S5：GeS2：xLi2O, wherein x takes respectively 0.3,0.4,0.8,1.2,1.6,2.0；Weighing is placed in agate mortar, then uniformly grinds 1h.Wherein, the oxygen in glove box Content and water content are respectively less than 1ppm.When grinding, using along the method alternately ground counterclockwise, 1h is at the uniform velocity ground.After grinding, institute The grain size for stating powder is about 300-500 mesh.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Enter argon gas as protective gas (flow of argon gas is detected using suspended body flowmeter, rate 1.0L/min), calcination temperature 550 DEG C, for 24 hours, then natural cooling is to get to sample, and sample is oxygen containing sulfide solid electrolyte material, and ingredient is for heat preservation Li10GeP2S12-xOX.XRD detection and analysis are carried out to obtained sample, if testing result shows that sample contains dephasign, it is necessary to Double sintering natural cooling again is carried out, the calcination temperature of double sintering is more slightly higher (such as 560 DEG C), and heat preservation is for 24 hours.
Step 3；Due to being powder after sample sintering cooling, for better test ion conductivity, it usually needs by sample Product tabletting coats silver paste test ion conductivity.So the tabletting in glove box by above-mentioned solid electrolyte material, a diameter of 8mm, thickness 3mm.In the two sides of solid electrolyte sheet coating conducting resinl, (purpose of gluing is for the ease of to the solid electrolyte Built-in testing.Such as silver paste, model DAD-87 can be used), it is then calcined, 200 DEG C of temperature, keeps the temperature 2h.
The structure of the oxygen containing sulfide solid electrolyte material is determining using X-ray diffractometer (XRD), X-ray diffraction Collection of illustrative plates shows that the sulfide solid electrolyte material obtained after sintering is crystal habit, is in tetragonal phase.The solid electrolyte material Pattern analysis test is carried out to the cross section transverse of sintered electrolyte sheet using scanning electron microscope (SEM), as a result show crystal grain Between be tightly combined, exist without stomata, consistency is preferable.Its at be grouped as using without window X-ray energy spectrometer (EDS) survey Examination finds that solid electrolyte material is made of Li, P, Ge, S and O, and EDS spectrograms can determine that the ingredient of solid electrolyte is Li10GeP2S12-xOX, specific (there are certain errors with actual value) as shown in table 1.
The element species and composition Li of 1. all samples of table10GeP2S12-xOx(x=0.3,0.4,0.8,1.2,1.6,2)
The chemical property of the oxygen containing sulfide solid electrolyte material uses Solartron1260 type electrochemical operations Station is tested.Measure half-cell Ag/Li10GeP2S12-xOXThe ac impedance spectroscopy of/Ag structures, according to the impedance value in spectrogram, knot The thickness for closing solid electrolyte, can calculate ionic conductivity.Higher ionic conductivity is shown at ambient temperature (to be more than 2×10‐5S/cm), and chemical stability is preferable, does not react with the water in air.
Experiment show oxygen containing sulfide solid electrolyte of the present invention be a kind of novel electrochemical stability with And the preferable solid electrolyte material of structural stability, it can be applied in solid state battery.
The present invention is discussed in detail with multiple embodiments individually below.
Embodiment 1
Step 1：By raw material with molar ratio (5-x) Li in glove box2S：P2S5：GeS2：xLi2O, chemical formula are Li10GeP2S12-xOX, wherein x=0.3.Weighing is placed in agate mortar, then uniformly grinds 1h.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Entering argon gas as protective gas, 550 DEG C of calcination temperature, for 24 hours, then natural cooling, tests and analyzes through XRD, sample passes for heat preservation, As oxygen containing sulfide solid electrolyte material, ingredient Li10GeP2S11.7O0.3。
Step 3；The tabletting in glove box by above-mentioned solid electrolyte material coats conductive on the two sides of solid electrolyte sheet Then glue is calcined, 200 DEG C of temperature, keeps the temperature 2h.Obtained electrolyte sheet uses when being test.
The obtained solid electrolyte of the present embodiment is Li10GeP2S11.7O0.3.It is coated with silver on solid electrolyte sheet two sides Slurry keeps the temperature 2h at 200 DEG C.AC impedance under room temperature is measured using Solartron1260 type electrochemical workstations.To electricity It is respectively 4.58 × 10 to solve the result of matter piece parallel testing three times-5S/cm,4.51×10-5S/cm,4.46×10-5S/cm。
Embodiment 2
Step 1：By raw material with molar ratio (5-x) Li in glove box2S：P2S5：GeS2：xLi2O, chemical formula are Li10GeP2S12-xOX, wherein x=0.4.Weighing is placed in agate mortar, then uniformly grinds 1h.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Entering argon gas as protective gas, 550 DEG C of calcination temperature, for 24 hours, then natural cooling, tests and analyzes through XRD, sample passes for heat preservation, As oxygen containing sulfide solid electrolyte material, ingredient Li10GeP2S11.6O0.4。
Step 3；The tabletting in glove box by above-mentioned solid electrolyte material coats conductive on the two sides of solid electrolyte sheet Then glue is calcined, 200 DEG C of temperature, keeps the temperature 2h.Obtained electrolyte sheet uses when being test.
The obtained solid electrolyte of the present embodiment is Li10GeP2S11.6O0.4.It is coated with silver on solid electrolyte sheet two sides Slurry keeps the temperature 2h at 200 DEG C.AC impedance under room temperature is measured using Solartron1260 type electrochemical workstations.To electricity It is respectively 9.23 × 10 to solve the result of matter piece parallel testing three times-5S/cm,9.38×10-5S/cm,9.53×10-5S/cm。
Embodiment 3
Step 1：By raw material with molar ratio (5-x) Li in glove box2S：P2S5：GeS2：xLi2O, chemical formula are Li10GeP2S12-xOX, wherein x=0.8.Weighing is placed in agate mortar, then uniformly grinds 1h.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Entering argon gas as protective gas, 550 DEG C of calcination temperature, for 24 hours, then natural cooling, tests and analyzes through XRD, sample passes for heat preservation, As oxygen containing sulfide solid electrolyte material, ingredient Li10GeP2S11.2O0.8。
Step 3；The tabletting in glove box by above-mentioned solid electrolyte material coats conductive on the two sides of solid electrolyte sheet Then glue is calcined, 200 DEG C of temperature, keeps the temperature 2h.Obtained electrolyte sheet uses when being test.
The obtained solid electrolyte of the present embodiment is Li10GeP2S11.2O0.8.It is coated with silver on solid electrolyte sheet two sides Slurry keeps the temperature 2h at 200 DEG C.AC impedance under room temperature is measured using Solartron1260 type electrochemical workstations.To electricity It is respectively 7.38 × 10 to solve the result of matter piece parallel testing three times-5S/cm,7.43×10-5S/cm,7.55×10-5S/cm。
Embodiment 4
Step 1：By raw material with molar ratio (5-x) Li in glove box2S：P2S5：GeS2：xLi2O, chemical formula are Li10GeP2S12-xOX, wherein x=1.2.Weighing is placed in agate mortar, then uniformly grinds 1h.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Entering argon gas as protective gas, 550 DEG C of calcination temperature, for 24 hours, then natural cooling, tests and analyzes through XRD, sample passes for heat preservation, As oxygen containing sulfide solid electrolyte material, ingredient Li10GeP2S10.8O1.2。
Step 3；The tabletting in glove box by above-mentioned solid electrolyte material coats conductive on the two sides of solid electrolyte sheet Then glue is calcined, 200 DEG C of temperature, keeps the temperature 2h.Obtained electrolyte sheet uses when being test.
The obtained solid electrolyte of the present embodiment is Li10GeP2S10.8O1.2.It is coated with silver on solid electrolyte sheet two sides Slurry keeps the temperature 2h at 200 DEG C.AC impedance under room temperature is measured using Solartron1260 type electrochemical workstations.To electricity It is respectively 6.53 × 10 to solve the result of matter piece parallel testing three times-5S/cm,6.75×10-5S/cm,6.68×10-5S/cm。
Embodiment 5
Step 1：By raw material with molar ratio (5-x) Li in glove box2S：P2S5：GeS2：xLi2O, chemical formula are Li10GeP2S12-xOX, wherein x=1.6.Weighing is placed in agate mortar, then uniformly grinds 1h.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Entering argon gas as protective gas, 550 DEG C of calcination temperature, for 24 hours, then natural cooling, tests and analyzes through XRD, sample passes for heat preservation, As oxygen containing sulfide solid electrolyte material, ingredient Li10GeP2S10.4O1.6。
Step 3；The tabletting in glove box by above-mentioned solid electrolyte material coats conductive on the two sides of solid electrolyte sheet Then glue is calcined, 200 DEG C of temperature, keeps the temperature 2h.Obtained electrolyte sheet uses when being test.
The obtained solid electrolyte of the present embodiment is Li10GeP2S10.4O1.6.It is coated with silver on solid electrolyte sheet two sides Slurry keeps the temperature 2h at 200 DEG C.AC impedance under room temperature is measured using Solartron1260 type electrochemical workstations.To electricity It is respectively 5.03 × 10 to solve the result of matter piece parallel testing three times-5S/cm,4.95×10-5S/cm,4.98×10-5S/cm。
Embodiment 6
Step 1：By raw material with molar ratio (5-x) Li in glove box2S：P2S5：GeS2：xLi2O, chemical formula are Li10GeP2S12-xOX, wherein x=2.0.Weighing is placed in agate mortar, then uniformly grinds 1h.
Step 2；Powder ground in step 1 is fitted into crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, leads to Entering argon gas as protective gas, 550 DEG C of calcination temperature, for 24 hours, then natural cooling, tests and analyzes through XRD, sample passes for heat preservation, As oxygen containing sulfide solid electrolyte material, ingredient Li10GeP2S10O2。
Step 3；The tabletting in glove box by above-mentioned solid electrolyte material coats conductive on the two sides of solid electrolyte sheet Then glue is calcined, 200 DEG C of temperature, keeps the temperature 2h.Obtained electrolyte sheet uses when being test.
The obtained solid electrolyte of the present embodiment is Li10GeP2S10O2.It is coated with silver paste on solid electrolyte sheet two sides, 2h is kept the temperature at 200 DEG C.AC impedance under room temperature is measured using Solartron1260 type electrochemical workstations.To electrolysis The result of matter piece parallel testing three times is respectively 2.73 × 10-5S/cm,2.95×10-5S/cm,2.78×10-5S/cm。
The ionic conductivity and electrochemical stability of 2. sample of table
From table 2 it can be seen that the present invention more existing solid electrolyte in terms of ionic conductivity and electrochemical stability Li10GeP2S12Increase significantly.

Claims (8)

1. a kind of doping O2-The lithium ion solid electrolyte material of ion, it is characterised in that：The material is crystalline structure, chemistry Formula is Li10GeP2S12-xOx, wherein x value ranges are 0.3~2.0.
2. doping O according to claim 12-The lithium ion solid electrolyte material of ion, it is characterised in that：X takes 0.3, 0.4,0.8,1.2,1.6 or 2.0.
3. a kind of all-solid lithium-ion battery, it is characterised in that：Electrolyte therein is doping O described in claim 12- The lithium ion solid electrolyte material of ion.
4. adulterating O described in claim 12-The preparation method of the lithium ion solid electrolyte material of ion, includes the following steps：
(1) according to molar ratio Li2S：P2S5：GeS2：Li2O=(5-x)：1：1：X weighs raw material and is ground；
(2) ground powder is mixed, carries out high temperature sintering, then natural cooling；
(3) doping O is finally obtained2-The lithium ion solid electrolyte material Li of ion10GeP2S12-xOx。
5. preparation method according to claim 4, it is characterised in that：After the completion of step (2), sample is taken to carry out XRD detections Analysis, if testing result shows that sample contains dephasign, carries out double sintering natural cooling again.
6. preparation method according to claim 4, it is characterised in that：Step (1), which weighs and grinds the ambient oxygen of raw material, to be contained Amount and water content are respectively less than 1ppm；The grain size of grinding gained powder is 300-500 mesh.
7. preparation method according to claim 4, it is characterised in that：Step (2) is specifically to be packed into ground powder In crucible, sealing is transferred to vacuum atmosphere tube type resistance furnace, is passed through argon gas as protective gas, 550 DEG C of calcination temperature, heat preservation For 24 hours, then cooled to room temperature.
8. preparation method according to claim 5, it is characterised in that：The calcination temperature of the double sintering is 560 DEG C, is protected Temperature is for 24 hours.
CN201810206258.5A 2018-03-13 2018-03-13 A kind of doping O2-Lithium ion solid electrolyte material of ion and preparation method thereof Pending CN108428936A (en)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109545567A (en) * 2018-11-27 2019-03-29 中国科学院青岛生物能源与过程研究所 A kind of all-solid-state battery type capacitor
CN110323488A (en) * 2019-06-25 2019-10-11 浙江锋锂新能源科技有限公司 A kind of preparation method of the sulfide solid electrolyte ceramics of high conductivity

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
YULONG SUN ET AL: ""Oxygen substitution effects in Li10GeP2S12 solid electrolyte"", 《JOURNAL OF POWER SOURCES》 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109545567A (en) * 2018-11-27 2019-03-29 中国科学院青岛生物能源与过程研究所 A kind of all-solid-state battery type capacitor
CN110323488A (en) * 2019-06-25 2019-10-11 浙江锋锂新能源科技有限公司 A kind of preparation method of the sulfide solid electrolyte ceramics of high conductivity
CN110323488B (en) * 2019-06-25 2023-07-04 浙江锋锂新能源科技有限公司 Preparation method of sulfide solid electrolyte ceramic with high conductivity

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Application publication date: 20180821